Pulley-lathe



(No Model.) I v2 Sheets-Sheet 1.

M. o'. 'HENLEY a1,- P. SHB'LLBNBAGK.

PULLEY LATHE.

No. 446,448. Patented Feb.. 1'7', 1891.

2 Sheets-Sheet 2.

(No Model.) Y

M. C. HENLEY 8v P. SHELLENBAGK.

PULLEY LATHE.

No. 446,448. Patented Feb. 17, 1891.

w NS

turen trarne Farrar @risica MICAJAII C. IIENLEY AND PETER SHELLENBAGK,OF RICHMOND, INDIANA.

SPECIFICATION forming part of Letters Patent No. 446,448, dated February17, 1891.

Application filed September 20, 1890. Serial No. 365,654. (No model.)

To all whom, t may con/cern.:

Be it known that we, MICA-UAH C. IIENLEY and PETER SHELLENBACK, citizensof the United States, residing at Richmond, in the county of Vayne andState of Indiana, have invented certain new and useful Improvements inPulley-Lathes, of which the follow- -ing is a specification.

Our invention relates to an improved feed mechanism for boring` anddrilling 1nachinery; and it consists in various features and details,hereinafter set forth and claimed.

The invention has reference more particularly to pulley-lathes in whichthe boring-ar bor is mounted in the tail-stock, and the iinprovementsrelate to a novel means for revolving and feeding the boring-arbor, andto a novel means for moving the said tail-stock back and forth.

In the drawings, Figure l is a perspective view of our improved machine;Fig. 2, a longitudinal vertical sectional view through the tail-stock onthe line 2 2 of Fig. 3; Fig. 3, a transverse vertical sectional view ofthe same on the line 3 of Figs. 2 and 4, and Fig. 4 a longitudinalvertical sectional view on the line 4 4 of Fig. 3.

Referring again to the drawings, A indi-` cates the bed or frame of themachine; l5, the headstocl 5 C, the tail-stock, and D a shaft extendingfrom the head-stock, where it receives motion from any suitable sourceof power to the tail-stock, where it is provided with a gear-wheel E,which latter is held between two arms a, projecting downward from thetail-stock.

It will be noticed upon reference to Figs. 2 and 8 that the shaft isgroovedlongitudinally to receive a spline, feather, or key carried bythe wheel, thereby permitting the latter to move lengthwise upon theshaft with the tailstock, but at the same time turn with the shaft whenit turns.

The tail-stock has at its upper end a tubular housing F, into whichsnugly iits the boring-arbor G. This arbor G is provided with alongitudinal key seat or groove h, and is also provided with an externalsquare screwthread, as at c, both of which extend from the outer end ofthe arbor inward for about twothirds (more or less) of its length.

The housing F is cutaway at its middle by a transverse opening, inwhichare inounted the gear-wheels II and I, the gear II having its hub boredout and threaded to screw upon the threaded arbor, while the gear I,which is larger than gear II, is provided with a keyor feather d toenter the groove l), forno edin the arbor.

Gears II and I engage with the wheels J and K, carried upon the innerend of a shaft L, journaled in a sleeve M, mounted in the tail-stock,the gear J being keyed rigidly to the shaft, while the gear K isdesigned to rotate or freely turn thereon, except when otherwisedesired.

Each of the gears J and K is provided with a lateral flange orfriction-cone e e, held normally apart by a coiled springf, as shown inFig. 2.

The extreme outer end of the shaft L is threaded to receive a ltnurlednut g, and between this nut and the outer end of the sleeve M (journaledin a fixed bearingsleeve 7L, secured. in the tailstock around the sleeveM) is a hand-wheelt', which is keyed upon the shaft L, so as to turntherewith and yet permit the shaft to move lengthwise. By turning up theknul-led nut the shaft will be moved outward longitudinally and thefriction-cone e of the gear J brought into engagementwith thecorresponding cone e of the gear K, thereby locking the two gearstogether and causing them to turn in unison. The spring f, which iscompressed when the friction-cones are in engagement, and which, whenthe knurled nut is unscrewed, tends to separate the frc tioncones, maybe omitted, if desired, though we prefer to use it.

Hung loosely upon the inner end of the larger sleeve 7L is an arm j,carrying at its lower end an idler N, which remains in engagement withgear K, and is designed to be thrown into orout of engagement at willwith the gear-wheel E by means of a hand-lever O, provided for thatpurpose. This handle or hand-lever projects out through the side of thetail-stock, as shown in Figs. l and 3,

and is provided with a latch or dog 7c, to en-v gage the frame of thetail-stock and prevent the arm 7' from being swung into such position asto permit the engagement of the gears N E.

Then it is desired to throw the gear N into Vengagement with wheel E itis only necessary to depress the outer end of the dog and rock thelatter so that its nose will be thrown out of engagement with the lug orprojection of the main frame of the tail-stock, whereupon the free endof the hand-lever O will rise and the arm j swing into such position asto permit the desired engagement of the gears, i5 the lever beinglimited in its movements by means of a set-screw Z. (Shown in Fig.

It will of course be seen that when the' idler-gear N is out ofengagement with wheel E no motion will be imparted to the arbor G.VVhenthe idler is in gear with the wheels K and E and the wheels J K aredrawn together, as before described, motion imparted to the wheel E willbe transmitted through the idlerN to the gear K; but inasmuch as thegears J K are locked together they will act as one gear of two differentdiameters. As these wheels gear directly into the wheels lll, itfollows'that the latter will have to receive different movements.

The wheel I, which serves to rotate the boring-arbor, will have a slowmovement, while the wheel Il, which serves to advance or recede thearbor, has a faster movement, the relation of the two movements beingdependent lof course upon the proportions of the gears.

When it is desired to recede or advance the arbor by hand, it is onlynecessary to throw the idler N out of engagement with wheel E, and thenactuate the gears IT I J K through the shaft and hand-wheel.

The advancement or retraction of the arbor (relatively to thetail-stock) without rotating the latter, should it ever becomedesirable, may be effected by throwing the idlery out ofaction,separating the gears J K and turning the gearJ through the mediumof shaft L and its handlwheel, the gear H, which will be turnedby thegear J, acting as a nut upon the threaded arbor.

In order' to carry the tail-stock and the parts carried thereby bodily'back and forth, we adopt the construction illustrated in Figs. 3 and 4,upon reference to which it will be observed that the feed is secured bymeans of a screw or threaded shaft P and a gear-nut Q, the former beingrigidly affixed in position in the bed orframe,while the latter iscarried by the traveling tail-stock.

The tail-stock is provided on its lower face with'two lugs m, lm,separated from each other,

and is cut away between the lugs to receive threaded shaft or screw P;but as the gear is embraced on its sides by the bars of frame R, whichis in turn embraced by or held between the lugs m m, the rotation of thegear will cause the tail-stock to move in one or the other direction,according to the direction of rotation of the gear.

As shown in Fig. 4, the lugs m m and the side bars of the frame R areperforated so that they move freely upon the screw or threaded fixedshaft, the frame R being also capable of a rocking or oscillatingmovement upon and at right angles to the screw, so that the gears S andT may be thrown into or out of engagement with the gears N and E,respectively.

NVhen the gear S is thrown into engagement with the idler N, the formerwill communicate motion ina certain direction'to the gear Q; but whenthe gearS is thrown out of engagement with the idler and the gear Tthrown into engagement with the gear E, a reverse motion willbe impartedtothe gearnut. Y

The rocking of the frame is effected by meansy of a handle U, secured tothe upper end of the frame and projecting out through an opening in theside of the tail-stock frame, as shown in Figs'. l and 3, and the handleand frame are held in their different positions by means of the notchesformed in the under side of the handleto receive alug on the tailstockframe.

To adjust the frame so that the tail-stock may remain fixed in position,the handle will be raised and moved unt-il the lug engages the middlenotch.

Vhen it is desired to move the tail-stock forward, the handle will bepulled outward to bringl the innermost notch over the lug, by whichmovement the frame R will be rocked and the gear T thrown into gear withwheel E; but when it is desired to recede'the tailstock the handle willbe pushedinward until the gear S comes into engagement with the idler N.

From the foregoing it will be seen that we are enabled'to move thetail-stock backward or forward, as desired, by power, thereby obviatingthe necessity of moving it by hand.

Instead of making the screw or shaft stationary and threading the gearQ, this arrangement may be reversed-that is to say, the shaft may beturned or rotated in one or the other direction by means of the gearingQ S T; but the gear Q in this arrangement instead of being threadedwould be provided with a feather to enter a longitudinal groovemodilication and its illustration in principle in Fig. 2 furtherillustration seems unnecessary.

IOO

IIO

V in the shaft in the same manner as the gearl 4While the invention wasdesigned primarily for use in connection with pulley-lathes and forboring we do not wish to be understood as limiting ourselves to suchuse, as it is obvious that various features of the present invention arecapable of use elsewhere.

IIaving thus described our invention, what we claim isl. In apulley-lathe, the combination, with the bed or frame, of the fixedhead-stock, the tail-stock movable upon the bed, a power mechanism,substantially such as shown and described, receiving motion from adriven part of the lathe for moving the tail-stock backward and forwardand for actuating the toolarbor mounted in the tail-stock, andmanually-operated devices, substantially such as Vshown and described,for throwing either the tail-stock feed mechanism or the tool-arbormechanism, or both, into or out of action, as desired.

2. In a pulley-lathe, the combination, with the bed or frame, of thefixed head-stock, the movable tail-stool; carrying the tool-arbor, and apower-feed mechanism for the tail-stock independent of thearbor-actuating mechanism.

In a pulley-lathe, the combination, with the movable tail-stock carryingthe tool'arbor, of a single driven shaft, such as D, and intermediateconnections between the rotatable shaft and the tail-stock and arbor forcommunicating motion thereto.

4. In a pulley-lathe, the combination, with the tail-stock, of a'rotatable toolarbor journaled therein, and means, substantially such asshown, for rotating said arbor and for moving it longitudinally.

In a pulley-lathe, the combination, with the tail-stock, of a rotatableand longitudinally-movable tool-arbor, a driving-shaft D, provided witha gearwheel E, and intermediate connections, substantially such asshown, between the arbor and gear\vheel for imparting both alongitudinal and rotary motion to the arbor.

6. In combination with the tail-stock and the tool-arbor, a gear-wheel Hfor moving the arbor longitudinally, a gear-wheel I for rotating thearbor, gears J K, engaging the gears H I, and means for locking thegears J K toget-her and imparting motion thereto.

7. In combination with the tail-stocli and the tool-arbor, gear-wheels Hand I, adapted to rotate and to advance and recede the arbor, gears J K,engaging the wheels II I, a driven shaft D, provided with a gear-wheelE, an idler N, and means for throwing the idler into and out ofoperative position between the gea-rs E and K.

8. In combination with the tail-stock, the tool-arbor, threaded andslotted as shown, gear-wheels II and I, provided, respectively, with athreaded hub and a key, gears J K, mounted upon a shaft Il and engagingthe wheels II I, means for moving the shaft lengthwise 4and locking thewheels J K together, an arm swinging concentrically about `shaft Il andprovided with an idler-pinion to mesh with the gear K, a handle securedto the pivoted arm, and a latch or dog for holding the handle inposition.

9. In combination with the tail-stock', toolarbor, and gears H I, thesleeves M and 7L, mounted in the tail-stock, a shaft L, mounted withinthe sleeve N and carrying at its outer end a thumb-nut, a hand-wheelbetween the nut and the outer end of the sleeve, having a slidingconnection with the shaft, a gearwheel K, mounted loosely upon the shaftand having a friction-face, and a gear J, rigidly vsecured upon theshaft and provided with a friction face to engage the corresponding faceof wheel K.

10. In combination with the tail-stock havin g the .perforated lugs, thefixed screw-shaft, the frame R, hung upon the shaft and provided with ahandle and with gears S and T, a gear-nut Q, engaging the gears S T, andmeans for imparting motion to either of the gears S T at will.

ll. In combination with the tail-stock provided with perforated lu gs,the threaded shaft passing freely through the lugs, a frame R, hungloosely upon the shaft and provided with gears S T and gear-nut Q., adriven shaft I), provided with a gear E, a gear-wheel N, meshing withgear E, and means for rocking the frame R so as to throw the gears S Tinto and out of gear alternately with the gears N and E.

In witness whereof we hereunto set our hands in the presence of twowitnesses.

MICAJAII C. IIENLEY. PETER SIAIELLENBACK.

Witnesses:

WEB PARRY, WILLIAM E. BELL.

ICO

